<template>
  <!-- 主体部分 -->
  <section class="main">
    <!-- 全选反选按钮 -->
    <input v-model="all" id="toggle-all" class="toggle-all" type="checkbox" />
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li v-for="item in list" :key="item.id" :class="{completed:item.done}">
        <div class="view">
          <input :checked="item.done" @change="$emit('change-done-event',item.id)" class="toggle" type="checkbox"/>
          <label>{{item.name}}</label>
          <button class="destroy" @click="$emit('del-event',item.id)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props: {
    list: {
      type:Array,
      required:true,
      default: () => []
    }
  },
  computed: {
    all: {
      get() {
        return this.list.every(item => item.done === true)
      },
      set(value) {
        this.$emit('check-all',value)
      }
    }
  }
}
</script>

<style></style>
